#15303: Coercion discovery fails to be transitive
-------------------------------------+-------------------------------------
Reporter: nbruin | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.13
Component: coercion | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: N/A | Work issues: Crash in permgroup.py
Branch: | Commit:
u/SimonKing/ticket/15303 | 5c0800a07bd83787e59713236e5ccc8dde434760
Dependencies: #14711 | Stopgaps:
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Comment (by SimonKing):
These are the errors one is getting with the current commits:
{{{
sage -t src/sage/groups/perm_gps/permgroup.py # Killed due to abort
sage -t src/sage/combinat/sf/sfa.py # 1 doctest failed
sage -t src/sage/rings/number_field/number_field.py # 11 doctests failed
sage -t src/sage/combinat/sf/new_kschur.py # 2 doctests failed
sage -t src/sage/tests/book_schilling_zabrocki_kschur_primer.py # 1
doctest failed
sage -t src/sage/combinat/root_system/weyl_characters.py # 1 doctest
failed
sage -t src/sage/combinat/sf/sf.py # 2 doctests failed
sage -t src/sage/structure/parent.pyx # 1 doctest failed
sage -t src/sage/rings/residue_field.pyx # 1 doctest failed
sage -t src/sage/combinat/symmetric_group_algebra.py # 1 doctest failed
sage -t src/sage/combinat/ncsf_qsym/ncsf.py # 4 doctests failed
sage -t src/sage/rings/polynomial/multi_polynomial_libsingular.pyx # 1
doctest failed
sage -t src/sage/rings/number_field/number_field_morphisms.pyx # 1
doctest failed
sage -t
src/sage/rings/universal_cyclotomic_field/universal_cyclotomic_field.py #
13 doctests failed
sage -t src/sage/rings/fraction_field_FpT.pyx # 2 doctests failed
sage -t src/sage/categories/algebras.py # 1 doctest failed
sage -t src/sage/categories/with_realizations.py # 1 doctest failed
sage -t src/sage/rings/padics/padic_base_coercion.pyx # 3 doctests failed
}}}
It is perhaps not as bad as it looks. Some of these errors come from
weakening of coerce maps, namely: Some of the coerce maps used in doctests
were not weakened by #14711, but became weakened now. So, that's trivial
to fix.
What is bad is (at least) the crash in permgroup.py, and 11 errors on
number fields also sounds like too many...
--
Ticket URL: <http://trac.sagemath.org/ticket/15303#comment:71>
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